87143232 has 140 divisors (see below), whose sum is σ = 261802880. Its totient is φ = 25555200.

The previous prime is 87143219. The next prime is 87143237. The reversal of 87143232 is 23234178.

It is a self number, because there is not a number n which added to its sum of digits gives 87143232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87143237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2811057 + ... + 2811087.

Almost surely, 2^87143232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87143232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130901440).

87143232 is an abundant number, since it is smaller than the sum of its proper divisors (174659648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87143232 is an equidigital number, since it uses as much as digits as its factorization.

87143232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 47 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 87143232 is about 9335.0539366412. The cubic root of 87143232 is about 443.3477965897.

The spelling of 87143232 in words is "eighty-seven million, one hundred forty-three thousand, two hundred thirty-two".